Chemical Safety Flashcards
7 cards from real NSC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Chemical Safety flashcards as text
What does the NFPA 704 diamond's blue quadrant indicate?
Answer: Health hazard
The blue (left) quadrant of the NFPA 704 diamond indicates health hazard on a scale of 0 to 4.
Which type of fire extinguisher is appropriate for a flammable liquid fire?
Answer: Class B
Class B fire extinguishers are designed for flammable liquid fires such as gasoline, oil, and solvents.
What is the primary purpose of secondary containment in chemical storage areas?
Answer: To prevent spills from reaching the environment
Secondary containment captures leaks or spills before they can spread and contaminate the surrounding environment or drain systems.
When diluting concentrated sulfuric acid with water, the correct procedure is to:
Answer: Add acid to water slowly
Acid should always be added slowly to water (never the reverse) to prevent the violent exothermic reaction from spattering concentrated acid.
Which federal regulation requires chemical manufacturers to provide Safety Data Sheets (SDS) to employers?
Answer: OSHA Hazard Communication Standard (HazCom)
OSHA's Hazard Communication Standard (29 CFR 1910.1200) requires chemical manufacturers and importers to provide SDS for hazardous chemicals.
What action should you take FIRST when you discover a large chemical spill in your work area?
Answer: Alert coworkers and evacuate the area
The first priority in a large spill is to alert others and evacuate to prevent exposure, then notify emergency response personnel.
A chemical with a flash point below 73°F (23°C) is classified as a:
Answer: Flammable liquid
Under OSHA and NFPA standards, liquids with flash points below 73°F (23°C) are classified as flammable liquids due to their higher ignition risk.